[PATCH v13 10/10] fs/ioctl: Add a comment to keep the logic in sync with the Landlock LSM

[Günther Noack]

Landlock's IOCTL support needs to partially replicate the list of
IOCTLs from do_vfs_ioctl().  The list of commands implemented in
do_vfs_ioctl() should be kept in sync with Landlock's IOCTL policies.

Signed-off-by: Günther Noack <gnoack at google.com>
---
 fs/ioctl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/ioctl.c b/fs/ioctl.c
index 1d5abfdf0f22..661b46125669 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -796,6 +796,9 @@ static int ioctl_get_fs_sysfs_path(struct file *file, void __user *argp)
  *
  * When you add any new common ioctls to the switches above and below,
  * please ensure they have compatible arguments in compat mode.
+ *
+ * The commands which are implemented here should be kept in sync with the IOCTL
+ * security policies in the Landlock LSM.
  */
 static int do_vfs_ioctl(struct file *filp, unsigned int fd,
 			unsigned int cmd, unsigned long arg)
-- 
2.44.0.396.g6e790dbe36-goog